Winding apparatus

ABSTRACT

A winder, such as a Model 959 take-up, manufactured by Leesona Corporation, Warwick, Rhode Island, has a rotary chuck mounted on a winder base and has chuck members resiliently urged into gripping engagement with a package core removably telescoped on the chuck. A lever is pivoted to the winder base and is operated in one direction by a fluid motor to release the chuck members from gripping engagement with the core. A brake member is pivotally connected with the lever in such a manner that operation of the motor in an opposite direction brakes the chuck and maintains the lever out of operating engagement with the chuck. The motor is controlled by a valve system which vents one side of the motor into the other side for positioning both the brake member and the lever out of engagement with the chuck.

Waited States Patent [191 Swinehart 1 Mar. 27, 1973 I541 WINDING APPARATUS [75] Inventor: Robert L. Swinehart, Warwick, R.I. [73] Assignee: Leesona Corporation, Warwick, R.l.

[22] Filed: Mar. 1, 1971 [21] Appl. No.: 122,578

[52] US. Cl. ..242/18 R, 242/46.4 [51] Int. Cl. ..B65h 54/02, B65h 67/04 [58] Field of Search .....242/18 R, 18 DD, 46.2, 46.4,

Beckwith ..242/46 4 Primary Examiner-Stanley N. Gilreath Attorney-Albert P. Davis et al.

[57] ABSTRACT A winder, such as a Model 959 take-up, manufactured by Leesona Corporation, Warwick, Rhode Island, has a rotary chuck mounted on a winder base and has chuck members resiliently urged into gripping engagement with a package core removably telescoped on the chuck. A lever is pivoted to the winder base and is operated in one direction by a fluid motor to release the chuck members from gripping engagement with the core. A brake member is pivotally connected with the lever in such a manner that operation of the motor in an opposite direction brakes the chuck and maintains the lever out of operating engagement with the chuck. The motor is controlled by a valve system which vents one side of the motor into the other side for positioning both the brake member and the lever out of engagement with the chuck.

6 Claims, 7 Drawing Figures Patented March 27, 1973 3,722,807

2 Sheets-Sheet l INVENTOR ROBERT L SWINEHART WWW?) ATTORNEYS Patented March 27, 1973 3,722,807

2 Sheets-Sheet 2 38 4 44 7 A L 52 54 I 7 I 56 Q 32 258- I38 H8 28 F r42 7/ 11% .K I 4 9 n48 no i V 446 24 4 36 E I26 t 5 us I22 7 7 22 A). "a I50 H4 152 )C 82 V V 86 94 I02 84 88 V 92 REG.

REG. 0O

H6 INVENTOR ROBERT L.SWI NEHART ATTORNEYS BWQM WINDING APPARATUS This invention relates to a winding and, more particularly, to a rotary chuck winder.

It has been common practice to provide winder chucks with manually operated chuck brakes and other mechanism for operating the chuck to grip and release a package core. Such apparatus is often inconvenient to use and requires a degree of skill for proper operation.

It is, therefore, a primary object of this invention to provide a new and useful winder.

A more specific object is provision of a new and useful winder which is automatically operable for braking a rotating chuck and for operating the chuck to grip and release a package core.

The invention, in brief, is directed to a winder having a rotary chuck for releasably engaging a package core. Automatically operable mechanism brakes rotation of the chuck and releases the chuck from gripping engagement with the core. A manually operable valve system controls operation of a fluid motor of the mechanism for braking rotation of the chuck, releasing the chuck from gripping engagement with the core, and then positioning the mechanism out of engagement with the chuck for free-rotation of the chuck.

Additional objects and advantages of the invention will be apparent from the following description and the accompanying drawings, in which:

FIG. 1 is a fragmentary, schematic side view of a winder with a chuck braking member and a chuck operating member in a neutral position, and with parts broken away and removed for clearer illustration;

FIG. 2 is a view similar to FIG. 1 but with the braking member in braking engagement with the chuck and the operating member out of engagement with the chuck;

FIG. 3 is a view similar to FIGS. 1 and 2, but with the braking member released from braking engagement with the chuck and the operating member in engagement with the chuck; I

FIG. 4 is a fragmentary, schematic top view of the apparatus as shown in FIG. 1, with parts omitted for clearer illustration;

FIG. 5 is a diagram of a control system for the apparatus;

FIG. 6 is a fragmentary, schematic side view of another embodiment of a winder with braking and operating members in a neutral position, and with parts broken away and removed for clearer illustration; and

FIG. 7 is a fragmentary, schematic elevational view taken generally along the line 7-7 in FIG. 6, with parts omitted for clearer illustration.'

Referring generally to FIGS. I4 of the drawings, a typical winder has a base 10 on which a spindle shaft 12 of a rotary chuck I4 is journalled. As may best be seen in FIG. 3, the chuck 14 has a plurality of axially disposed and radially spaced chuck members 16 mounted in supports 18 (only one shown) fixed to the spindle shaft 12 for releasably gripping the inner cylindrical surface of a core- 20 which is telescoped onto the chuck 14 for winding a yarn package 22 thereon. The chuck members 16 are resiliently urged into gripping engagement with the core 20 by a suitable spring system (not shown), and are released from gripping engagement with the core 20 by movement to the left of actuating rods 24. These rods 24 are normally urged to the right by a spiral compression spring 26 telescoped on the spindle shaft 12 and seated between a collar 28 fixedly secured to the spindle shaft and a collar 30 telescoped on the spindle shaft and seated against suitable stops 32 on the rods 24. Ends of the rods 24 are seated against an annular actuating flange 34 of a sleeve 36 telescoped on the spindle shaft 12.

An annular braking surface 38 of the chuck 14 extends outwardly about the actuating rods 24, as shown in FIG. 1. As shown in FIG. 2, the chuck braking surface 38 is engaged by brake lining pads 40 on brake shoes 42 of a rigid braking member 44. A reversible fluid motor, here in the form of a double acting fluid operating cylinder 46 has the free end of its piston rod 48fixed to the braking member 44 for adjustment generally axially of the longitudinal axis of the chuck 14 by means of a threaded connection and is retained in adjusted position by a lock nut 50.

A first or right end 52 of the cylinder 46 is pivotally connected by a pin 54 to an L-shaped bracket 56 which, in turn, is fixedly connected to the base 10 as by a pair of bolts 58. The right end 52 of the cylinder 46 has a passageway (not visible) communicating with a conduit 60 to a control system (FIG. 5) for passage of an operating fluid, preferably air, at a suitable pressure, for example psi gauge, into the cylinder to move the piston rod 48 to the left. This forces the brake pads 40 into braking engagement (FIG. 2) with the brake surface 38 of the chuck 14. As the braking member 44 moves into its braking position, a pin 62 fixed to opposed legs 64 of the braking member moves into a generally axially extending notch 66 at the bottom of an elongated slot 68 in a chuck operating member 70 to hold the braking member 44 against radial movement on the chuck brake surface 38, which might otherwise occur because of the pivotal mounting of the right end of the cylinder 46 on the base 10.

Afterrotation of the chuck 14 has been stopped, the operating fluid may be shut-off and vented from the right end 52 of the cylinder 46. Operating fluid at a suitable pressure, for example 85 psi gauge, is passed from the control system (FIG. 5) through a conduit 72 communicating with a passageway (not visible) opening into a second or left end 74 of the cylinder 46, to retract the piston rod 48. This causes the pivot pin 62 on the braking member 44 to move upwardly through the. elongated slot 68 toward the upper end of the operating member which is pivoted intermediate its ends on a pin 76. In turn, pin 76 is seated between a pair of tabs 78 (FIG. 4) integral with the base 10 of the winder. The elongated slot 68 permits greater pivotal movement of the operating lever 70 with less axial movement of the braking member 44, to accommodate clearance limitations.

As the operating lever 70 is pivoted from the position shownin FIG. 2 to the position shown in FIG. 3, its lower end 80 engages the annular actuating flange 34 to move the actuating rods 24 of the chuck 14 to the left against the force of the compression spring 26, thereby releasing the chuck members 16 from gripping engagement with the core 20, whereupon the core and the yarn wound thereon may be slid off of the chuck 14. An empty core 20 may now be placed onto the chuck 14, the operating fluid shut-off and vented from the left end 74 0f the cylinder 46, whereupon the braking member 44 and operating lever 70 are returned toward their neutral position (FIG. 1) responsive to the force of the spring 26 urging the actuating rods 24 and thereby actuating flange 34 to the right. The vented operating fluid from the left end 74 of the cylinder 46 is passed to the right end 52 of the cylinder, as will be described next with reference to the valve system shown in FIG. 5, to complete movement of the operating lever 70 to its neutral position without causing braking member 44 to engage the chuck braking surface 38.

Referring to FIG. 5, the control system includes a braking valve 82 which is a vented shut-off valve having its outlet connected through the conduit 60 with the right end 52 of the cylinder 46 and its inlet connected through a conduit 84 with a pressure regulating valve 86 which, in turn is connected through a conduit 88 with supply conduit 90 having a master shut-off valve 92, so that the cylinders right end 52 receives operating fluid at a pressure of about 45 psi gauge, for example. The left end 74 of the cylinder 46 has its conduit 72 connected with the outlet of a chuck operating valve 94, which is also a vented shut-off valve. The valve 94 has its inlet connected through a conduit 96 with a pressure regulating valve 98 which, in turn, is connected through a conduit 100 with the supply conduit 90, so that the cylinders left end 74 receives operating fluid at a pressure of approximately 85 psi gauge, for example. The vents of the braking valve 82 and the operating valve 94 are interconnected by a conduit 102 having a restricted vent orifice 104.

During normal winding both valves 82 and 94 are closed. To stop the chuck 14, the braking valve 82 is opened for passage of operating fluid into the right end 52 of the operating cylinder 46, thereby actuating the braking member 44 so that its pads 40 brakingly engage the brake surface 38 on the chuck, as previously described. At this time the vent of the braking valve 82 is closed. After the chuck 14 is stopped, the braking valve 82 may be shut, thereby opening its vent to pass the operating fluid into the vent conduit 102 and through the orifice 104 with no consequential effect on the left end 74 of the cylinder 46 for moving the piston rod.

The chuck operating valve 94 may now be opened to apply the higher operating pressure (85 psi) into the left end 74 of the cylinder 46, thus completely releasing the brake member 44 from braking engagement with the chuck 14 and pivoting the lower end 80 of the operating lever 70 into engagement with the annular actuating flange 34 of the chuck, to release the chuck members 16 from gripping engagement with the core 20, as previously described. The package 22 may now be doffed and an empty core 20 donned onto the chuck 14.

When the operating valve 94 is shut it vents the operating fluid from the left end 74 of the cylinder 46 and into the conduit 102. The chuck members 16 return to their gripping position as the compression spring 26 urges the actuating rods 24 and therefore the annular actuating flange 34 to the right, thus pivoting the operating lever 70 counterclockwise. However, the lower end 80 of the operating lever 70 would still be in engagement with the actuating flange 34 of the chuck. But, the operating fluid is vented through the vent conduit 102 from piston rod end of the cylinder to the unobstructed end 52 to move the piston rod 48 just slightly to the left, thus taking the lower end 80 of the operating lever 70 out of engagement with the actuating flange 34 of the chuck 14. The restricted orifice 104 in the vent conduit 102 is sized so that insufficient pressure is applied through the braking valve vent to the right end 52 of the cylinder 46 to move the braking member pads 40 into engagement with the brake surface 38 of the chuck 14.

Another apparatus for braking the chuck l4 and releasing the chuck members 16 from gripping engagement with a core 20 is shown in FIGS. 6 and 7. Herein, a chuck 106 has a bushing 108 receivingan end of a core 110 which is releasably held on the chuck by chuck member (not shown), with rods 112 (only one shown) for releasing the chuck members, all as previously described. The chuck is mounted on a spindle shaft 114journalled on a base 116 and an cylinder (not shown) is mounted on the base 1 16 and is operated by a control system as shown in FIG. 5, all as previously described with reference to FIGS. 1-5.

However, in the apparatus shown in FIGS. 6 and 7, an operating member, againinthe form of a lever 118, is received in a notch 120 (FIG. 7) in a boss 122 on the winder-base 116. A braking member 124 has a pair of depending and opposed mounting arms 126 embracing opposite sides of the boss 122, and a pivot pin 128 extends through the arms 126, the boss 122 and the operating lever 118. Spacer sleeves are provided between each of the braking member arms 126 and the boss 122, and torsion springs 132 are telescoped on the sleeves with opposite ends of each spring seated against the boss 122 and the braking member 124 for urging the braking member out of braking engagement with an annular braking surface 134 (FIG. 6) of the chuck 106.

' reversible fluid motor, again in the form of a double acting cylinder (not shown) as previously described, has its piston rod 136 adjustably connected with a U-shaped bracket 138 by a threaded connection and lock nut 140, and this bracket has opposite legs 142 receiving the top end of the operating lever 118 'therebetween, with a pivot pin 144 pivotally connecting the bracket and the lever. Upon applying operating fluid at a pressure of 45 psi gauge, for example, from the braking valve 82 of the control system, as described with reference to FIG. 5, to the first or right end of the operating cylinder (not shown), the piston rod 136 is moved outwardly to pivot the operating lever 118 counterclockwise so that it engages a bight 146 of the braking member 124 to urge a brake lining pad 148 against the braking surface 134 of the chuck 106, thereby stopping the chuck.

The braking valve 82 is now shut, thereby venting the right end of the cylinder. The operating valve 94 (FIG. 5) may now be opened, thereby applying operating fluid at a pressure of 85 psi gauge, for example, to the second or left end ofthe cylinder to swing the operating lever 118 clockwise, thereby urging a lower end 150 of the lever into engagement with an annular actuating flange 152 on a sleeve 154 telescoped on a spindle shaft 114 of the chuck to urge actuating rods 112 to the left engagement with a core, as previously described. During this operation, the torsion springs 132 move the braking member 124 out of braking engagement with to release chuck members (not shown) from gripping the chuck 106. Upon shutting off the operating valve 94, the operating fluid is vented from the left end of the cylinder into the right end of the cylinder for moving the lower end 150 of the operating lever 118 out of engagement with the actuating flange 152 of the chuck while maintaining the braking member 124 out of engagement with the chuck, as previously described.

While this invention has been described with reference to particular embodiments in a particular environment, various changes may be apparent to one skilled in the art and the invention is therefore not to be limited to such embodiments or environment except as set forth in the appended claims.

What is claimed is:

1. Apparatus for winding a strand to form a package comprising, a rotatable chuck for supporting a core on which said strand is wound, resilient means for urging said chuck to a gripping position to hold said core during rotation of the chuck, braking means operable to engage the chuck to stop rotation thereof, drive means operable to move said braking means to a first position to engage and brake said chuck to a stop and to a second position to release said braking means from en-.

gagement with said chuck, chuck releasing means movable in a first direction to engage said chuck to remove the chuck from said gripping position and movable in a second direction to disengage said chuck releasing means from said chuck, means on said drive means for moving said chuck releasing means in its first and second directions; and power means for operating said drive means to sequentially shift said braking means to said first position, move said chuck releasing means in said first direction while moving said braking means to said second position and thereafter shifting said chuck releasing means in said second direction.

2. Apparatus as set forth in claim 1 wherein said chuck releasing means comprises a lever having a slot therein, and a pivot for pivoting said lever into engagement with said chuck to release said chuck.

3. Apparatus as set forth in claim 2 wherein said means on said drive means comprises a cam follower slideably engaging said slot to move said braking means to said first and said second positions.

4. Apparatus as set forth in claim 3 wherein said drive means comprises a cylinder, a piston slidable relative to said cylinder and connected to said braking means, said power means comprising a source of operating fluid connected to the cylinder to operate said piston to move said braking means to said first and said second positions and said chuck releasing means in said first and said second directions.

' 5. Apparatus as set forth in claim 4 including valve means for controlling passage of said fluid to said cylinder to operate said braking means to move said braking means to said first and said second positions and to move said chuck releasing means in said first and said second directions.

6. Apparatus as set forth in claim 5 wherein said slot includes a portion arranged to receive said cam follower, said cam follower when arranged in said portion acting to position said braking means in a position intermediate said first and said second positions. 

1. Apparatus for winding a strand to form a package comprising, a rotatable chuck for supporting a core on which said strand is wound, resilient means for urging said chuck to a gripping position to hold said core during rotation of the chuck, braking means operable to engage the chuck to stop rotation thereof, drive means operable to move said braking means to a first position to engage and brake said chuck to a stop and to a second position to release said braking means from engagement with said chuck, chuck releasing means movable in a first direction to engage said chuck to remove the chuck from said gripping position and movable in a second direction to disengage said chuck releasing means from said chuck, means on said drive means for moving said chuck releasing means in its first and second directions; and power means for operating said drive means to sequentially shift said braking means to said first position, move said chuck releasing means in said first direction while moving said braking means to said second position and thereafter shifting said chuck releasing means in said second direction.
 2. Apparatus as set forth in claim 1 wherein said chuck releasing means comprises a lever having a slot therein, and a pivot for pivoting said lever into engagement with said chuck to release said chuck.
 3. Apparatus as set forth in claim 2 wherein said means on said drive means comprises a cam follower slideably engaging said slot to move said braking means to said first and said second positions.
 4. Apparatus as set forth in claim 3 wherein said drive means comprises a cylinder, a piston slidable relative to said cylinder and connected to said braking means, said power means comprising a source of operating fluid connected to the cylinder to operate said piston to move said braking means to said first and said second positions and said chuck releasing means in said first and said second directions.
 5. Apparatus as set forth in claim 4 including valve means for controlling passage of said fluid to said cylinder to operate said braking means to move said braking means to said first and said second positions and to move said chuck releasing means in said first and said second directions.
 6. Apparatus as set forth in claim 5 wherein said slot includes a portion arranged to receive said cam follower, said cam follower when arranged in said portion acting to position said braking means in a position intermediate said first and said second positions. 